Reporting question for Tilt Back Leg Kit - Fender

Product:
Tilt Back Leg Kit - Fender

Question:
I am assuming the 14" tilt back legs for my Fender 65 Princeton Reverb Reissue would do. Would I be correct in my assumption? I wouldn't want to buy this item and later find out that I'm S.O.L. Would I have to remove the chassis to install the tilt back legs? Thanks for your help.